Stringing-up or drawing-through device for wiredrawing drums



Feb. 5 1924.,

C. H. OSLUND STRINGING UP 0R DRAWING THROUGH DEVICE RoR WIRE DRAWING DRUMS Filed June l5. 1921 Innanto-r Chacas H. Oswnd.

By attarrws hand through more or 'Patented' Feb. 5, 1924.

i UNITED STATES 1,482,859 PATENT oFFlcE.

CHARLES H. OSLUND, 0F WORCESTER, MASSACHUSETTS, ASSIGNOB T0 THE 0 J' MACHINE COMPANY, A CORPORATION OF MASSACHUSETTS.

STRINGING-UP 0R DRAWING-THROUGH DEVICE FOR WIREDRAWING DRUMS.

Application med June 15, 1921. Serial No. 477,814..A

To all lwhom it may concern.'

Be it known that I, CHARLES H. OSLUND, a citizen of the United States, residing at lVorcester, in the count of Worcester and State of Massachusetts, ave invented a new and useful Stringing-up or Drawing- Through Device for Wiredrawing Drums, of which the following is a specification.

This invention relates to a drum fora wire drawing machine or bench. It can be applied either to the drawing through drums or to the winding drum.

The principle object of the invention is to provide a device by which the several drums of a wire drawing machine or bench can be strung u slowly by hand after the wire is inserte through the die. More specifically this invention provides means whereb the operator can turn the drum slowly by hand so that the tongs ordinarily employed for drawing the flattened end of a wire from the die to the surface of the drum can be attached by a chain to the drum through a hole in the circumference and the drum rotated with a slow motion at first and later with a more rapid motion, but entirely by hand, to draw the wire through the die and string it around the drum ess than one complete turn. This is a great improvement over the ordinary metho of Stringing up by means of an oscillating lever and reciprocating slide.

After enough wire is drawn through the die the end is gripped by a device supplied for that purpose on the drum, and t e devi ce which is the subject of this invention is not used further ordinarily. The drum is started in any of the usual ways, although it is possible to start it by this e and get it to going by hand so that when the power is turned on there will not be such a sudden strain on the wire as there would be otherwise. Other objects of the invention are to provide arrangements of this character in which the drum is positively connected with the driving means norma 1y, and will be automatically disconnected therefrom when the Stringing up or drawing through means is applied and automatically reconnected when the same is moved out of operative position, and to provide these arts in such simple manner that they will be inexpensive and involve very little, if any, increase in expense for repairs. Further objects and advantages of the mvention will ap ear hereinafter.

Reference is to be ad to the accompany'- mdrawmgs, in which 1 1 is a plan of a wire drawing drum constructed in accordance with this invention;

Fig. 2 is a central sectional view of the same and showing the drawing through or Stringing up mechanism in pos1tion, and

Fig. 3 is a fragmentary central section, showlng the parts in normal position for operation by power.

It is well known that when wire is threaded throughI a die ready to be applied to the drum on which it is to be wound, or by which it is to be drawn, it has to be fiattened and reduced in size to thread it through the die and that is done unevenly by hand. A air of ton is then attached to the short attened en of the wire when the wire is stuck through the die and by chains the tongs are connected to an oscillating lever or a reciprocating member operated by the lever at the instant when the lever is moved forward away from the die. This forward movement draws the wire through the die a foot or more. If that is not enough the operator has to grip the wire again, and on the next stroke of the lever get an additional length of wire through the die. This is then attached to the drum by clamping means and the drawing operation started.I This is a hand operation that requires an alert operator who l, has to devote his entire attention to it when the machine starts and whenever a new wire is to be introduced. Furthermore it has to be done to. each drum of a continuous wire drawing machine.

This diiiiculty, I am aware has been well known for many years and many attempts have been made to overcome it. I overcome it by a hand operating Stringing up device. This procedure involves the entire disconnection of the positive driving means from the drum automatically and instantaneously when the Stringing up device is placed in position for operation. It also involves the instantaneous connection of the positive driving means with the drum when the hand operating Stringing up means is withdrawn.

It is to be understood that the invention is intended to be applied to all the drums of the wire drawing machine although I have shown onl one.

I have i lustrated the invention as a plied to the drawing through drum 10. his is rovided with a hub 11 in which is centered But freely rotatable a positive driving shaft 12 shown in vertical position, andprojecting up from below. This shaft may he driven in any desired way and preferably is driven positively and at constant speed. The top of this shaft is squarediof at 13 or otherwise given a non-circular shape. Fitting it so as to run with it positively is a hub 14 having thereon a positive power-transmitting member or wheel shown in the form of an external gear 1-5. This gear therefore, rotates positively with the shaft 12, while the drum 1() is capable of rotating with it or otherwise.

0n the hub 14 is a circular shoulder 15a having a flat upper surface. On this rests a plate 16 which extends out from the center radially in a horizontal direction. At its outer end this plate engages the inside of the drum 10 and is secured thereto by screws as 17 or the like. The plate thus rotates with a vertical bearing 18 for a shaft 27.

On the bottom of this shaft is a pinion 20l and on the top a similar pinion 21. Both of thesel pinions are keyed to the shaft. The pinion 20 meshes with the gear 15.

The inion 21 meshes with a gear 22 mounted) on a vertical shaft 23, having a bearing 24 in the plate 16. On the top this gear 22 is provided with a circular series of ratchet teeth 25 having vertical forward edges and slanting rear edges. On the top of the shaft 23 which does not rotate on its own axis, is pivoted a locking lever 26. This lever at one end has an oblong opening which fits` and receives the upper end of the shaft 27.' The same end of this lever has a fiat surface which is adapted to en age the front surface of any one of the ratcet teeth 25 and prevent rotation of the ratchet wheel and gear 22.

The shaft 12 has extending up from its square end a central projection 30 of cylindrical form. On this is adapted to fit a sleeve 31 having a pinion 32 at the bottom for meshing with the gear 22. I have shown this sleeve as provided with a hub 33 having a square shoulder 34, and' rovided above with a handle 35 or va handpwheel as may be desired.

The drum is provided with slots through which the wire is attached and with a fixed plate 37 inside on which are two studs 38 and 39, vertical and parallel. One stud has a roll 44 thereon, and\the other an eccentric 41. This eccentric. has a handle 42 connected by a spring 43 with the end of the bracket 37. It will be seen that the handle 42 has to be swung outwardly in opposition to the spring in order to release the wire, and that Maaate the spring normally swings the handle back so as to grip the wire between the eccentric 4l and the adjacent Yroll. This furnishes an efficient gripping device for the wire.

'The operation of the device is as follows: Normally the handle 35 and sleeve 31 and pinion 32 are either lifted or entirely rcmoved. Thc end of the lever 26 which has the eye is heavier than the other end and consequently it will stay down in the position indicated in Fig. 3. Therefore, the rotation of the shaft 12 rotates the gear 15 with it, andas the shaft 27 cannot rotate on its own axis, it necessarily rotates as a whole with the gear 15. This causes the drum l() to rotate with the shaft 12 positively, and without any lost motion.

If the shaft 12 and also the gear l5 were rotating at full speed, the raising ot' the outer end of the lever 26 would free thc shaft 27 so that it would be free to rotate on its own axis. Consequently the rotation of the gear 15 will rotate the shaft 27 through the pinion 2t.) without moving the shaft bodily, and without moving the drum. This rotates the pinion 21 and gear 22. It likewise rotates the. pinion 32, but the drum remains stationary.

N ow in order to turn the drum to string the wire through the die before the shaft 12 is started, the operator turns the handle 35 and applies the power through the gears in the reverse order to that just above described. In this way he can cause the shaft 27 to turn on its own axis at a different speed from that at which it would rotate normally from 12, and he can cause the pinion 20 to walk around the rotating gear 15 at any desired speed. This will cause the drum 10 to rotate slowly in a forward direction. This is done while the wire is being drawn through the die by the tongs and chain connected by a hook on the chain through a perforation in the wall of the drum as described above. This is the principal object and action of this device. But in order to speed up the drum he rotates it faster until it is going so fast that the drum rotates at the same speed as the gear 15 or nearly so. ln other words, heturns the handle fast enough to prevent the rotation of the pinions 20 and 21 on their own axis. Then he simply withdraws the handle. When he lifts the pinion 32 up out of operative position the lever 26 will drop back to the position shown in F ig. 3. At this time the circular rack of the gear 22 will engage the edge of the lever 26 and prevent the relative rotation of this gear and circular rack. This positively stops the rotation of the shaft 27 on its own axis, thus forcing the drum 10 to rotate positively with the driving shaft 12 which is started when the handle is removed.

Although I' have illustrated and described only a single form of the invention and shown it as applied to yone drum of a wire drawing machine, I am aware of the fact that the constructlon can be modified and the device applied to other tylpes of wire drawing drums and winding rums without departing from the sco e of the invention as expressed in the claims. Therefore, I do not wish to be limited to'all the details of construction or tothe particular kinds of drums herein shown and described, but what I do claim is 1. In a wire drawin machine, the combination with a drum or receiving wire on its surface, of a shaft on which the drum is centered but with respect to which the drum is relatively rotatable, a gear fixed to said shaft, a. shaft mounted to rotate with the drum, a pinion on said shaft meshing with said gear, andV means for rotating the last named shaft on its own axis, whereb the drum will be forced to rotate lndepen ently of the driving shaft.

2. In a wire drawin machine, the combination with a drum or receiving wire on its surface, of a shaft on which the drum is centered but with respect to which the drum is relatively rotatable, a gear fixed to said shaft, a shaft mounted on the drum, a pinion on said shaft meshin with said ear, means for holding the ast named s aft against rotation, said means being movable to inoperative position, whereby said shaft will be permitted to rotate without rotating the drum, and means for rotating said shaft by hand to rotate the drum relatively to the driving shaft.

3. In a wire drawin bination with a drum or receiving wire on its surface, of a shaft on which the drum is centered but with respect to which the drum is relatively rotatable, a gear fixed to said shaft Within the drum, a shaft mounted in place on the drum inside it, a pinion on said shaft meshing with said gear, means for preventing the last named shaft from rotating on its own axis, a handle adapted to be removably mounted on the upper end of said driving shaft, and means connected with said handle for releasing the second shaft and permitting it to rotate on its own axis and for rotating it on its own axis from the handle.

4. In a Stringing up device for a wire drawing machine, the combination with a driving shaft, of a gear fixed thereto to rotate positively with the shaft, a drum centered on and loosely connected with the driving shaft, means connected with said gear for positively driving the drum with it at its own speed said means comprising a shaft carried by the drum,` located on an axis parallel with the axis of the driving shaft, a lever rotatable with the drum and positively connected therewith, a ratchet wheel mounted to turn on an axis rotatable with machine, the comthe drum and havin 'means for rotating the second shaft, said ever -haviln means for engaging the ratchet wheel an reventing its rotation, a removable han le having means for lifting the lever out of engagement with the ratchet wheel and with the second shaft and having means for independently rotating the second shaftto impart its rotation through the second shaft to the drum.

5. In a Stringing up device for a wire drawing machine, the combination with a driving shaft and a drum rotatable thereon, of a hub fixed to the drum, a gear and a shaft carried by the drum, a pair of pinions keyed to the last named shaft, one of the pinions constantly meshing with the gear on the hub and the second one meshing with the gear carried by the drum which has a ratchet surface and is freely rotatable on its axis, means for locking the ratchet wheel gear as a whole against rotation on its own axis and for locking the two pinions against rotation on their own axis, said means comprising a lever, and a removable handle havin a pinion adapted to mesh with the second gear and centered on the driving shaft, and having a shoulder for lifting said lever out of o rative position, whereby the handle can e operated to rotate the drum at any desired speed without interrupting the rotation of the driving shaft.

6. The combination with a wire winding or drawing drum, of a power shaft, means in the drum for positi-vel connectin the drum with the shaft for dsiiving the rum, said means comprising an element carried by the drum and capable of rotating on an axis other than the axis of the power shaft when not connected to rotate the drum, and a hand operated element having means for disconnecting the drum from the shaft and means for rotating the drum.

7. In a wire drawing machine, the combination with adriving shaft and a drum, of means within the drum for rotating the drum positively from the shaft, means within the drum for rendering the drum rotating means inoperative and a hand operated device for rotating the drum independently of the driving shaft .when I the last named means is inoperative.

8. In a wire drawing machine, the combination with a driving shaft and a drum, of meansr within the drum for rotating the drum positively from 'the shaft, said means being capable of being disconnected from the drum, a hand operated device on top of the drum, and gearing in the drum for rotating the drum positively from said hand operated device independently of the driving shaft at any desired speed.

9. In a wire drawing machine, the combination with a driving shaft and a drum, of means within the drum for rotating the drum positively from the shaft, said means being movable to inoperative position, a bearing in the center of the drum, a shaft adapted to be moved on said bearing from the end thereof and having on one enel means for rotating the drum positively, and means on the other end for operating the shaft by hand.

t 10. The combination with a wire drawing drum, of a shaft on which the drum is centered, the shaft and drum being relatively rotatable, a positive power transmitting member fixed with respect to said shaft, means for transmitting the motion of said member to the drum positively, said means bein movable to inoperative position, and n hanc operated means connected for positivemeeste 1y rotating the drum when the first named means is in inoperative condition.

1l. In a wire drawing machine or bench, the combination with a drum for receiving wire on its surface, of a shaft on which the drum is centered but with respect to which the drum is relatively rotatable, a gear fixed to said shaft, a shaft mounted to rotate with the drum, a pinion on said shaft meshing with said gear, and means for preventing the last. named shaft from rotating on its own axis, whereby theJ drum will be forced to rotate with the driving shaft positively.

In testimony whereof I have hereunto affixed my signature.

CHARLES H. OSLUND.' 

